Geoege bekkhaedt



2 Sheets-Sheet 2.

RQTS A Frs s. Patentedjan. 30, 1872.

FG 2a w Y Y E GEORGE BERNHARDT, OF RADCLIFFE, GREAT BRITAIN.

IMPROVEMENT IN MECHANISMS FOR DOFFING AND APPLYING BOBBINS INSPINNING-MACHINES.

Specification forming part of Letters Patent No. 123,222, dated January30, 1572.

SPECIFICATION.

I, GEORGE BERNHARD'I, of Radcliffe, in the county of Lancaster, in theKingdom of Great Britain and Ireland, have invented Improvements inSpinnin@-Machines, of which the following is a specilication:

llI y invention relates to mechanism for simultaneouslyremoving fullbobbins from spinningmachines and replacing' them with empty bobbins,and consists in improved moditications, arrangements, and deviceshereinafter described.

In the accompanying two sheets of drawing, marked B, vFigure 1 is across-sectional elevation of so much of a spinning-machine as will benecessary for explaining my invention. Fig. 2 is a front view of thesame, showing only one spindle. Fig. 3 is a detached plan of the emptybohbin-rail. Fig. 4 is a detached view in section, showing anlalternative arrangement ofthe empty bobbin-rails; and Fig. 5 is afullsized detached section of a traveler-ring.

rJhe improvements are illustrated as applied to a ring and travelerspinning-frame. A, the two end frames 5 A1, spindle-foot step-rails; A2,upper spindle-bearing' rails 5 A3, roller-beams; a., draft or otherrollers 5 b, tin drum or roller for driving the spindles C. Theabove-named are all ordinary parts of spinning-machines. e, shafts foractuating the copping or ring rails d. These shafts have wheels e3,clutches c4, clutch-forks e5, and a shaft, e6, to connect the twoclutches, as a means of connecting anddisconnecting the two shafts ewith any ordinary copping-motion. The wheels el, e8, and e9 (thepitch'lines of which are shown in Fig. 1) gear the two shafts etogether, and also with the wheel f1 in the boss of the hand-wheelf,loose on the end of the tin-drum shaft. lThe mechanism is the same uponboth sides of the frame, and I shall refer in my description, to make itmore clear, to the parts only of one side of the frame. There are wheelse3 on the shaft e, a-nd each of these gears with a rackbar, e2, slidingvertically in bearings in the spindle-rails, the number of theserack-bars depending upon the length of the frame. To

the upper end of the rack-bars the. ring-rail d is jointed on centersd1, so that when spinning it may remain in a horizontal position,as-shown on the left side of Fig. 1, but may be lifted to the inclinedposition shown on the right side of Fig. 1. bent spring, d2, is secured,which carries a Wedge, d3, which the force of the spring presses yagainst the edge of the ring-rail when horizontal, and, the end of thewedge and the edge of the ring-rail being slightly beveled, the force ofthe spring tends to hold the ring-rail down in its horizontal position;but when the ringrail d is lifted the wedge passes between its underside and the top of the rack-bar e3 and holds it in the inclinedposition. This lifting ofthe ring- 1ail into the inclined position isaccomplished by one or more pins, 1.4, in the ringrail, which pin comesagainst the top of the upper spindle-rail A2 when the rin g-rail islowered suiiiciently. The wedged3 is withdrawn by causing the inclineupon the end ofthe spring d2 to come against an incline-stop, d5,secured to the roller-beam A3, by raising the rin g-rail sufficientlyhigh. Both these extreme movements of the ring-rail are beyond itsordinary reciprocations when spinning. r1he rail K for the empty bobbinextends from end to end of the frame, and has diagonal slots K1 in it,by which it can be secured by screws K2 to the framing so as to beAmoved to and fro by the handle K3 diagonally. lhe rails on both sides ofthe frame may be connected by a cross shaft and two arms, the ends ofwhich lit crossslots in the rails, so that both may be simultaneouslyacted upon by moving the cross-shaft if required. In each rail there areas many holes as there are spindles, and these holes, when the machineis spinning, (as shown on the left of Fig. 1,) are midway between thespindles, so that the empty bobbins come in the space between thethreads; but when dofng, the rail is slid forward diagonally by pushingendwise at the handle K3 of the rail, and the A vupon which the bobbinsrest, this hinged bottom being partly cut away where it will comeopposite each spindle, as shown in Fig. 3. r1`he To one or more of therack-bars a' spring', K6, secured to the roller-beam.

hinged bottom is held np, as shown on the left side of Fig. l, by a tailpart, K5, from it, which comes under the end of a bent or beveled Thisspring gives way when the tail part descends, and then escapes past andcomes above and holds down the tail part. lVhen the empty bobbiu-rail isslid endwise the tail part K5 is withdrawn from the spring K6, whichallows the bottom K4 to fall just when the axes of the empty bobbinscome over the spindles. The hinged bottom K4 is lifted when the emptybobbin-rail is moved back by one arm of a twoarmed part, K7, centered ona bracket, K8, secured to the roller-beam that comes aga-inst the underside of the hinged bottom, and the bottom is lifted quite close when theedge of the empty bobbiu-rail strikes the other arm of the part KT, (seeleft of Fig. 1,) by which time the spring K6 will have risen above thetail part. K is a pin in the bracket to keep the arms in the part KTfrom falling` too far when the bobbin-rail moves forward. In place ofthe hinged bottom amore simple arrangement may be used formed by abottom, K9, extending from end to end of the frame and fixed to avertical plate secured to the frame. (See Fig. et) This iixed bottomsustains the empty bobbins with sufficient accuracy, and their edges areonly released from the edge of the fixed bottom a short space before theaxes of the bobbins come over the spindles. The lower heads of thebobbins used are notched, and have a groove round them, as shown, andthe collar of the brad G1 upon each spindle is roughly milled, so as toprevent the thread from uncoiling when the full bobbins are lifted fromthe spindles, and break the thread between the full bobbins and thebrads with certainty. The rings upon which the traveler works are eachmade with an internal projection, n, as shown by the full-size detachedView, Fig. 5. This is to prevent the threads from escaping from thetraveler when dofling, as they are liable to do when the thread isslackened.

I will now describe the mode of dofng. Then the bobbins a-re full theclutches e4 are disconnected then lthe ring-rails are lowered by thehand-wheelf until they come against a stop, m, which is a sliding pinconnected with a spring-handle, m1. At this stop a portion of thread iswound in spinning round the boss part of each brad G1, and then themachine is stopped. The stop m is then withdrawn and the ring-rails arelowered by the hand-wheel f until the stop or stops d4 come against theupper spindle-rail A2. This places the ringrails in the position shownon the right of Fig. l, so that as they ascend by turning back thehand-wheel f the edge of each ring will come under the end of the fullbobbin, which is slid up the spindle, the wire curl Z1 lifting out ot'the way to allow it to pass and fall from the spindle into any suitablereceptacle placed to receive it. The ring-rail d is made to ascend alittle after the bobbins have fallen to bring the inclined end of thespring cl2 against the incline-stop d5, secured to the roller-beam, andthis causes the wedge d3 to be withdrawn, leaving the ring-rail to fallby gravity and assume its horizontal position. The ring-rail is thenlowered and the clutches e4 brought again into gear. The emptybobbin-rails Kare slid forward diagonally, and the empty bobbins X fallupon the spindles, and this completes the doffing opera-tion.

Slack thread is given before the ring-rail is moved upward in doffin gby turning forward the draft-rollers to the extent of about onethird ofa revolution of the front rollers. The ri ng-rail may be made to slideforward instead of being hinged, as described 5 but I prefer to hingethe ring-rail, as shown in Figs. l and 2.

Claims.

l. The ring-rail, hinged to the sliding rail or frame, in combinationwith the devices described or their equivalents, whereby the rings arecaused to strike and lift the bobbins, as set forth.

2. The combination of the hinged rail and the pins d4, arranged tostrike the rail A2 and tilt the ring-rail, as and for the purposespecied.

3. The combination of the tilting ring-rail, the springs d2 and wedgesd, and the inclined stop d5, for the purpose specified.

4. The combination of the sliding bobbinrail- K and the hinged plate K4,as and for the purpose described.

In testimony whereof I have signed my name to this specication in thepresence of two subscribing witnesses.

GEO. BERNHARDT.

Vitncsses:

PETER J. LIVsEY, J Aims Woons.

